package com.sjzny.security;

import cn.hutool.json.JSONUtil;
import com.sjzny.bean.RespBean;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

/*
* 用户认证失败的处理器
* 1.什么情况下是认证失败？
*   1）验证码错误  2）用户名或密码错误
* 2.认证失败怎么处理
*   返回表示失败的JSON信息
* */
@Component
public class LoginFailureHandler implements AuthenticationFailureHandler {

    //对认证失败进行处理
    //String
    @Override
    public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException, ServletException {
        response.setContentType("application/json;charset=utf-8");
        ServletOutputStream out = response.getOutputStream();
        RespBean result = RespBean.error(exception.getMessage());

        out.write(JSONUtil.toJsonStr(result).getBytes("UTF-8"));
        out.flush();
        out.close();
    }
}
